Hammer coral polyp extension issue.

[SLREEF]

I have a 300 gallon reef tank which is supporting a mixed reef. I am using natural sea water 250 gallons per each month. Always after 2-3 weeks of new water change my hammer become slowly unhappy. I am dosing kalkwasser/sodium bicarbonate/seachem iodide/ k balance. seachem zooplankton/ phytoplankton/coral vitaliser and reef pearls(powder). I would like to increase the interval between water changes but my hammer coral doesn't like it. My acropora/montipora/brain and Other sps are ok witout large water changes and they are totally happy. The hammer coral was with me for 2 years and it's a wall hammer. I tried everything to keep the hammer coral without water changes but it's impossible. Thanks.

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[bonomo53]

Wall hammers are notorious for doing this. They just don't do well in our tanks. Once one small piece starts to die the whole piece will eventually go.

 

[SLREEF]

Thanks. But the Coral has grown alot from the day I received it. I hope that means I need to replace water every month.

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[coralcruze]

have you tried sending out an ICP test? most people are surprised to find out something is either needed or should be removed.